The native Steam Deck resolution setting is 1280×800. If you want to have a a higher Steam Deck’s resolution setting then this can be done with the device whether you are using it on handheld mode or ...

The Steam Deck boasts a native resolution of 1280×800, which closely resembles 720p. This is true for both the LCD version and the OLED version. When docked, the Steam Deck can reach up to 4K at 120Hz ...

ok i've got redhat installed now, i set the resolution as 800x600 during setup just to make sure it all works. well now i'm in kde and when i change the resolution it says i have to restart x-server.